.nav_img {
  width: 100vw;
  height: 0.9rem;
  padding: 0.05rem 0;
  box-sizing: border-box;
}
.nav_img ul {
  height: 0.9rem;
  display: flex;
  justify-content: space-around;
}
.nav_img ul li {
  width: 50px;
  height: 0.9rem;
  flex: 1;
  text-align: center;
  color: #333;
}
.nav_img ul li img {
  display: inline-block;
  width: 0.5rem;
  height: 0.57rem;
}
